While I have only had a reef tank for two years, I have kept fish tanks since 1985 and have always found the more hiding places and mini territorial zones you can create, the happier/healthier the fish are. Minimalistic tanks look stunning but you should keep the stocking levels low or decrease the variety of fish or they will get stressed and sick more often.
I have a loose reef wall scape and this allows many different sized swim throughs. The only downside to this is you cannot see all your wildlife at any given point in time so you need to watch the tank over a longer period to see everything.

You current layout looks good.. but I would try and make a few caves here and there. really makes a big difference to the whole look when you have fish hiding or swimming through gaps/caves in the rock work. It will also help to minimise stress levels with certain fish and when adding new fish. With my new scaping, I have created 3 caves. my three tangs have taken ownership of each already.. and my cleaners seem to make the caves the cleaning spot. Which helps the fish being cleaned to sort of relax. I also notice my chromis love all the small gaps. It is also their sleeping spot.

Scaping looks awesome man, i am busy doing my scaping today and tomorrow, i like to use as little rock as possible, my new tank is 300L and i am only using 13kg of rock to do my scape. tank is 1000x500x500
I am also using the pratley putty as it works very well for holding rocks and the colour blends in.